Fiery Australian tennis prodigy Nick Kyrgios came close to being disqualified from the US Open after receiving three warnings for swearing in the first round.

Kyrgios, 19, who sensationally beat Rafael Nadal at Wimbledon, received two code violations in the third set and then a third warning in the fourth, which saw him penalised a game.

Kyrgios smashed a ball out of the stadium in frustration during the second set, then dropped the F-bomb before being docked a game in the fourth set for a second audible obscenity before eventually beating 21st seed Mikhail Youzhny 7-5 7-6 (7-4) 2-6 7-6 (7-1).

And while he lives on in the tournament Kyrgios conceded his outbursts probably don't help and that he was trying to eliminate them from his game.

"It just comes from having high expectations most of the time," he said.

"I have been an emotional player most of my career. Maybe I will be able to manage it in the future.